(Asmodia is not especially happy about yet another ORANGE STATEMENT going up on her wall, now they have to make sure that Keltham doesn't see or read about the way that fire elementals are actually used. But Sevar already told Keltham fire elementals exist, way back in the first hours when Keltham asked about the hot water in the archduke's villa, and fire elementals are obviously-to-him useful... so, Asmodia supposes the best avenue is to lock them in a box and make sure they never try to talk to him.)
(Why does she feel weirdly bad about that. Even Good people aren't supposed to care about fire elementals, right?)